NIGELLA 



NITRO 



Nigella, (ni-jel'la). [L. niger, black.] A plant 

 belonging to Rauunculaceae, named from the 

 colour of the seeds. 



Nigger. Turnip fly, q.v. 



Night. N. <rpe=Nyctipithecus. N. 7iawk= 

 Chordeiles virgin. N. heron=A.rdea. nycti- 

 corax. N. jcM'=Caprimulgus Mahrattensis 

 =Caprimulgus Europseus: also called fern- 

 owl, goat-sucker,dorhawk, eve-jar,aud churn- 

 owl. N. swallows, v. Swallows. 



Nightingale, ( nlt'ing-gal ). [Nihtegale, the 

 A.-S. name.]=Mo- 

 tacilla luscinia = 

 Philomela luscinia: 

 a singing bird; also 

 called thicket-war- a 

 bier; heard in Eng- 

 land from April to 

 June, the males 

 coming first. Not, 

 known in Wales, 

 Cumberland, Ire- 

 land, or Scotland; 

 nor in Brittany or 

 Channel Islands. Nightingale. 



Nightshade, (nit'shad)=Solanum: a poisonous 

 plant; the type of Solan- 

 aceae. Deadly N. = 

 Atropa belladonna. 



Nightshades, (nlt'shadz) 

 =Solanaceae, q.v. 



Nile-mud, (nil). [River 

 Nile.] A compound of 

 silica,alumina, peroxide 

 of iron, and carbonate 

 of lime; increases about 

 6 inches in a century. 



Nilometer,(nl-lom'e-ter). 

 [River Nile; Gk. metron, Nightshade. 

 measure.] An apparatus for the measure- 

 ment of the height to which it rises in its 

 periodical floods. 



Nimbus, (nim'bus). [The Latin word.] 1.= 

 Rain-cloud=cumulo-cirro-stratus. 2. In art 

 rrHalo: a ring of light round the head of a 

 figure. 



Ninth. In music, the interval equal to an 

 octave and one note, or nine notes. N. nerve 

 = Hypo-glossal nerve, passing from the me- 

 dulla-oblongata to the tongue and larynx. 

 In fishes counted as the first spinal nerve. 



Niobates, (nl'o-bats). [Niobic, q.v.] Com- 

 pounds of niobic acid with bases. 



Niobic, (nl'o-bik). [Niobium, q.v.] N. oxide 

 =N. anhydride. Hydrated N. oxide=X. 

 acid. 



Niobite, (ni'o-bit). ' [Niobium, ?.7;.]=Co]um- 

 bite: a black mineral from which Niobium 

 is obtained. 



Niobium, (ni-o'bi-um). [Niobe, daughter of 

 Tantalus.]=Nb=:Colambium: a rare metal 

 found in Columbite, named from being sup- 

 posed to be found in tantalite, 3.1;. 



Nipples, (nip'lz). [Nypele, the A.-S. word.] 

 =teats: first developed in early marsupial 

 animals, and transmitted to man. 



Nipple- wort=Lapsana: a slender milky plant 

 belonging to Asteracese. 



Nispera, (nis'pe-ra)=Achras sapota: a Nicara- 



guan tree, with very durable timber, belong- 

 ing to Sapotacese. 



Nitella, (ni-tel'la). [L. niteo, I shine.] A 

 plant belonging to Characese, q.v. 



Nit-grass=Agrostis Australis: a grass plant. 



Nitracol, (ni'tra-kol). [Nitric, q.v.] An acrid 

 liquid, obtained from acting on oananthol by 

 nitric acid. 



Nitran, (ul'tran). [Nitrogen, Q.v.]=Nitrion, 



<.V. 



N itraniline, (m-tran'MTn). [Nitroxyl and 

 Aniline.] = C 6 H 6 N 2 2 = Aniline in which 

 nitroxyl replaces one atom of liydrogen. 



Nitrates, (ni'trats). [Nitric, q.v.] Compounds 

 of nitric acid with bases. Hydric N. =Nitric 

 acid. Amyl N., Ethyl N., &c. v. Nitric 

 ethers. Fused N_. ofsilver= Lunar caustic. 



Nitratine, (ui'tra-tm). [Nitrate, g.?;.]=Nitra- 

 tite, q.v. 



Nitratite, (ni'tra-tit) = NaN0 3 = Nitratine = 

 Nitrate of sodium: a mineral, crystallising 

 in hexagons, resembling nitre. 



Nitre, (ni'ter). 1. Nitrate of sodium. 2.= 

 KNO 3 =Nitrate of potash: a mineral, usually 

 in rhombic crystals, used in making gun- 

 powder, glass, &c. ; also called saltpetre. 

 Cubic N.= Nitrate of soda. 



Nitric acid = HNO 3 =Hydric nitrate = Aqua 

 fortis: a colourless, fuming, highly corrosive 

 liquid: a powerful solvent. 



Nitric anhydride=N 2 5 =Dinitric pentoxide: 

 a colourless, crystalline substance. 



Nitric ether. (C 2 H 5 )N0 3 -Ethyl nitrate: a 

 colourless liquid, the vapour of which is 

 inflammable. 



Nitric oxide = NO = Nitrosyl: a colourless, 

 neutral gas with an unpleasant odour. 



Nitrides, (ni'trldz). [Nitrogen, q.v.] Com- 

 pounds of nitrogen with a metal, or with 

 phosphorus, silicon, or boron, usually very 

 unstable. 



Nitriles, (nftrllz). [Nitrogen, q.v.] 1. Term 

 used for Hydrocyanic ethers. 2.=Amides: 

 from which water has been removed. Ex. 

 acetamide H 2 0=Acetonitrile : the nitriles 

 are also considered as tertiary monamides. 

 cf. Amides and Imides. 



Nitrile bases Tertiary monamines: tri- 

 methylia, tri-ethylia, nicotylia, &c. 



Nitrion, (m'tri-on). [Nitrogen, g.v.]=:N0 3 : 

 the radicle of nitric acid ; also called 

 Nitran. 



Nitrites, (ni'tiits). [Nitrogen, q.v.] Com- 

 pounds of NO 2 with alkaline metals. N. 

 ofamyl: counteracts strychnia, and produces 

 paralysis of muscle. 



Nitro, (ni'tro). [Nitrogen, q.v.] A prefix 

 denoting the presence of Nitrogen as a 

 constituent. N. benzol = Azo-benzol, q.v. 

 N. calcite: a haloid mineral, chiefly nitrate 

 of calcium . JV. 



a very explosive, oily liquid= 

 Glycerin in which three atoms of H. are 

 replaced by nitroxyl. N. hydrochloric acid 

 = Aqua-regia, q.v. N. muriatic acid = 

 Aqua-regia, q.v. N. salicylic cic?=Indi- 

 gotic acid=Anilic acid, q.v. N. theine= 

 Cholestrophan: a pearly, crystalline sub- 

 stance found in caifeine. 



